Google's public market capitalization near $4.2 trillion as of mid-October 2026 substantially exceeds the combined valuations of OpenAI at roughly $850 billion to $1.2 trillion and Anthropic at $965 billion, supporting the 90.5% market-implied probability that Alphabet maintains the higher valuation through December 31. Recent funding discussions, including OpenAI's reported $1.4 trillion pre-money ambitions and Anthropic's investor-day talks around $1.5 trillion ahead of a potential November IPO, reflect rapid revenue growth to annualized run rates near $50 billion and $67 billion respectively, yet these figures remain anchored well below Google's scale. The short time frame to year-end limits the scope for dramatic revaluations or IPO-driven shifts that could close the gap, though any acceleration in Anthropic's listing or unexpected private rounds could introduce modest volatility in trader sentiment.